Since the hand is the "most basic communication method," why not transform it into a cellphone? That's what designer Sunman Kwon did with this finger touching wearable mobile device, a concept that puts 3.5G and 4G technology on your fingertips. Each joint in your hand (save for the thumb) corresponds to 12 buttons. Just goes to show you that you don't need umpteen millions of VC dollars to create something unique.